1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ahrayia [7]
3 years ago
9

When buying a car, you tell the salesman that you want to make sure the car can go from 0 miles per hour to 60 miles per hour in

5 seconds. You are describing the car's
Physics
2 answers:
romanna [79]3 years ago
8 0
Acceleration.

Acceleration is the rate of change of velocity with time.

So you want to ascertain if it can accelerate from 0 mile/hour to 60 miles/hour in 5 seconds.
MaRussiya [10]3 years ago
4 0
Acceleration....................................... <span />
You might be interested in
Question 12 of 34 Which of the following means that an object is slowing down? /13 ယာ O A. Its velocity is decreasing. B. Its ac
Vera_Pavlovna [14]

Answer:

A. Its velocity is decreasing

Explanation:

6 0
3 years ago
A heat engine operating at steady state delivers a power output of 15.5 hp. The engine receives energy by heat transfer in the a
Anna007 [38]

Answer:

w_cycle = 13.68 KJ / cycle

Explanation:

Given:

- Steady power out-put W_out = 15.5 hp

- System executes 50 cycles/min

Find:

Determine the amount of work that is delivered during each cycle in kilo-joules

Solution:

- First we will convert the steady output into KW as follows:

                                 W_out = 15.5 hp

The conversion factor is 1.36 KW per hp.

                                 W_out = 15.5 [hp] * [KW] / 1.36 [hp]

                                 W_out = 11.4 [KW] or [KJ/s]

- Given that there are 50 cycles in 60 sec. We will use direct proportionality to calculate the number of cycles per second:

                       50 cycles   -----------> 60 s

                          x cycles   -----------> 1 s

                                 x = 50/60 = 0.8333 cycles /s

- Next we will compute the amount of work done per cycle:

                                 w_cycle = W_out / x

                                 w_cycle = 11.4 [KJ/s] * [s] / 0.8333 [cycles]

                                 w_cycle = 13.68 KJ / cycle

7 0
2 years ago
One piece of copper jewelry at 111°C has exactly twice the mass of another piece, which is at 28°C. Both pieces are placed insid
vladimir2022 [97]

Answer:

83.33 C

Explanation:

T1 = 111 C, m1 = 2m

T2 = 28 C, m2 = m

c  = 0.387 J/gK

Let the final temperature inside the calorimeter of T.

Use the principle of calorimetery

heat lost by hot body = heat gained by cold body

m1 x c x (T1 - T) = m2 x c x (T - T2)

2m x c X (111 - T) = m x c x (T - 28)

2 (111 - T) = (T - 28)

222 - 2T = T - 28

3T = 250

T = 83.33 C

Thus, the final temperature inside calorimeter is 83.33 C.

3 0
3 years ago
Develop a hypothesis for why one of the two types of soup should indeed be rolling down faster than the other. This hypothesis s
Eva8 [605]

Answer:

Assume two identical cans filled with two types of soup having same mass are rolling down on an inclined plane in same conditions. In terms of inertia different types of soup will indicate different viscosity. The higher viscosity fillings indicates more part of the soup mass is rotating together with the can’s body. This means that for the can with lower viscosity soup has a lower moment of inertia and the can with higher viscosity has higher moment of inertia while the same gravity makes them to roll.

incline angle = θ ; can's mass =  m ; Radius of the can's = R , Angular acceleration for Can 1 = α1 ; Angular acceleration for Can 2 = α2

T1 = Inertia of Can with high viscosity soup

T2 = Inertia of Can with low viscosity soup

M1 rolling moment of Can 1

M2 rolling moment of Can 2

equation is given by

T1*α1 = M1   - (a)

T2*α2 = M2 - (b)

M1 = M2 = m*g*R*sin(θ). (c)

as assumed T1 > T2

from the three equation (a), (b) & (c)

the α2 > α1

Angular acceleration of Can 2 is higher than Can 1. Already stated that Can 1 has more viscous soup as compared to Can 2.

7 0
3 years ago
An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail. Different sizes of
alex41 [277]
Dependant variable is something which you MEASURE during an experiment

So your answer would be : B
5 0
3 years ago
Other questions:
  • A toaster oven uses67,500 joules of energy in 45 seconds to toast a piece of bread what is the power of the oven
    12·1 answer
  • A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car?
    15·2 answers
  • Simone created a chart to summarize the energy transformations that take place when energy from the wind is used to generate ele
    11·2 answers
  • Which statement is true about the formation of bonds?
    11·2 answers
  • In an obstacle course, runners must jump hurdles that are .84 m high. If the speed of one of the athletes when he is 1.63 meters
    13·1 answer
  • Four waves are described by the following equations, where distances are measured in meters and times in seconds. I. y = 0.12 co
    8·1 answer
  • How does genetic drift affect small populations differently than large populations?
    9·1 answer
  • Electromagnetic energy travels inselect one:<br> a. long stringsb. short stringsc. burstsd. waves
    8·2 answers
  • You release a block from the top of a long, slippery inclined plane of length l that makes an angle θ with the horizontal. The m
    7·1 answer
  • The high-speed police chase ends at an intersection as a 2,150-kg Ford Explorer (driven by Robin) traveling south at 35 m/s coll
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!